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“18650 3S7P Battery Pack 11.1V 18200mAh 18.2Ah Large Capacity Li-ion Pack for Portable Power Station E-scooter Robot AGV Medical Equipment | CE UN38.3 | OEM Factory” has been added to your cart. View cart
7S1P 25.9V 2600mAh 18650 Li-ion Battery Pack Rechargeable for E-scooter Electric Bike Power Tool AGV Industrial Equipment | Custom 2200~3500mAh | CE OEM Factory
$22.00
π 18650 7S1P Battery Pack β 25.9V 2600mAh Rechargeable Li-ion Industrial Battery
Overview
This 18650 7S1P lithium-ion battery pack connects seven Grade A 18650 cells in series, delivering 25.9V / 2600mAh (67.34Wh) in a compact cylindrical blue PVC heat-shrink enclosure. The 25.9V output bridges the gap between standard 22.2V tool packs and 36V e-bike systems β making it the preferred choice for low-voltage electric scooters, light e-bikes, high-power cordless tools, brushless motor systems, and industrial automation equipment requiring stable sub-30V DC power. CE and UN38.3 certified, with full OEM customization available.
7S1P Architecture
[C1]β[C2]β[C3]β[C4]β[C5]β[C6]β[C7]
3.7V Γ 7 = 25.9V nominal
4.2V Γ 7 = 29.4V fully charged
Capacity = 2600mAh
Energy = 25.9V Γ 2.6Ah = 67.34WhKey Specifications
| Parameter | Specification |
|---|---|
| Configuration | 7S1P |
| Total Cells | 7Γ Grade A 18650 |
| Cell Capacity | 2600mAh / cell |
| Nominal Voltage | 25.9V |
| Fully Charged | 29.4V |
| Capacity | 2600mAh |
| Energy | 67.34Wh |
| Internal Resistance | β€ 220mΞ© (pack) |
| Weight | β 330g |
| Recommended Charge | 0.5C = 1.3A CC/CV |
| Max Charge Current | 2.6A (1C) |
| Continuous Discharge | 5.2A (2C) |
| Peak Discharge | 10.4A (4C) |
| Discharge Cut-off | 21.0V (3.0V/cell) |
| Self-discharge Rate | β€ 2% / month |
| Cycle Life | β₯ 500 cycles |
| Capacity Retention | β₯ 80% at 500 cycles |
| Operating Temp | -20Β°C ~ 60Β°C |
| Storage Temp | -10Β°C ~ 25Β°C |
| Storage Voltage | 26.6V (3.8V/cell) |
| Enclosure | Blue PVC heat-shrink |
| Balance Connector | JST-XH 8Pin (7S) |
| Discharge Connector | XT60 / custom |
| Wire Gauge | AWG16 |
| Certification | CE / UN38.3 / RoHS |
Full Voltage Reference
| State | Voltage | Note |
|---|---|---|
| Fully charged | 29.4V | 4.2V Γ 7 |
| Nominal | 25.9V | Standard rating |
| Storage | 26.6V | 3.8V/cell β optimal |
| Low warning | 23.1V | 3.3V/cell β recharge |
| BMS cutoff | 21.0V | 3.0V/cell β hard stop |
| Overcharge cutoff | 29.75V | 4.25V/cell β BMS |
Multi-Capacity SKU Options
| SKU | Cell | Voltage | Capacity | Energy | Weight |
|---|---|---|---|---|---|
| 7S1P-2200 | 2200mAh | 25.9V | 2200mAh | 56.98Wh | β290g |
| 7S1P-2400 | 2400mAh | 25.9V | 2400mAh | 62.16Wh | β310g |
| 7S1P-2600 β | 2600mAh | 25.9V | 2600mAh | 67.34Wh | β330g |
| 7S1P-3000 | 3000mAh | 25.9V | 3000mAh | 77.7Wh | β370g |
| 7S1P-3400 | 3400mAh | 25.9V | 3400mAh | 88.06Wh | β405g |
| 7S1P-3500 | 3500mAh | 25.9V | 3500mAh | 90.65Wh | β415g |
β Default: 2600mAh Grade A β best balance of cycle life, cost, and energy density.
7S1P Position in Voltage Ladder
| Config | Voltage | Charged | Key Application |
|---|---|---|---|
| 5S1P | 18.5V | 21.0V | Laptops, projectors |
| 6S1P | 22.2V | 25.2V | Power tools, lawn mowers |
| 7S1P β | 25.9V | 29.4V | E-scooters, light e-bikes |
| 8S1P | 29.6V | 33.6V | High-power tools |
| 10S1P | 37.0V | 42.0V | Standard e-bikes |
| 13S1P | 48.1V | 54.6V | High-voltage e-bikes |
π 25.9V sweet spot: Higher than standard tool voltage (22.2V) yet below the 36V e-bike threshold β ideal for 24V-class systems and controllers rated 24V~29.4V.
7S1P vs 6S1P vs 8S1P
| Metric | 6S1P | 7S1P | 8S1P |
|---|---|---|---|
| Voltage | 22.2V | 25.9V | 29.6V |
| Charged | 25.2V | 29.4V | 33.6V |
| Energy | 57.7Wh | 67.3Wh | 76.9Wh |
| Weight | β290g | β330g | β375g |
| Best for | Power tools | E-scooters, 24V systems | High-power tools |
Runtime Estimation
| Device | Power Draw | 7S1P-2600 Runtime |
|---|---|---|
| Electric scooter (low speed) | 150W | β 27 min |
| Light e-bike (assist mode) | 100W | β 41 min |
| Cordless circular saw | 100W | β 41 min |
| Electric lawn mower | 80W | β 51 min |
| Light AGV motor | 60W | β 68 min |
| Industrial robot joint | 40W | β 1.7 hours |
| Brushless RC platform | 50W | β 1.4 hours |
π Based on 67.34Wh at 85% efficiency.
24V System Compatibility
| Controller Rating | Compatible with 7S1P | Notes |
|---|---|---|
| 24V nominal | β | 25.9V within tolerance |
| 24V~29.4V input | β | Direct fit |
| 24V brushless ESC | β | Verify max input voltage |
| 36V controller | β | Use 10S1P instead |
| 48V controller | β | Use 13S1P instead |
β οΈ Always verify your controller or device’s maximum input voltage tolerance β 7S1P reaches 29.4V when fully charged.
BMS Protection β 7-Cell System
| Protection | Threshold | Function |
|---|---|---|
| β‘ Overcharge/cell | 4.25V cutoff | Prevents thermal runaway |
| π Over-discharge/cell | 2.75V cutoff | Preserves cycle life |
| βοΈ Cell balancing | Auto on charge | Equalizes all 7 cells |
| π₯ Overcurrent | >10.4A trip | Protects motor circuits |
| β οΈ Short-circuit | Instant cutoff | User & device safety |
| π‘οΈ Over-temperature | 65Β°C cutoff | Thermal protection |
| π Auto-recovery | After fault cleared | Field-friendly |
Applications
| Industry | Typical Devices |
|---|---|
| π΅ E-mobility | Electric scooters, light e-bikes, electric wheelchairs |
| π§ Power Tools | High-power cordless drills, saws, grinders |
| πΏ Garden | Electric lawn mowers, hedge trimmers, leaf blowers |
| π€ Robotics | Light robot arms, educational platforms, autonomous systems |
| π AGV | Light warehouse AGV, sorting equipment |
| π RC & Hobby | Large RC vehicles, FPV platforms, RC boats |
| π‘ Field Power | Portable lighting rigs, outdoor broadcasting |
| π₯ Medical | Mobile medical carts, portable rehabilitation equipment |
βοΈ IATA Air Freight Status
| SKU | Energy | IATA | Status |
|---|---|---|---|
| 7S1P-2200 | 56.98Wh | Section II | β Minimal restrictions |
| 7S1P-2400 | 62.16Wh | Section II | β Minimal restrictions |
| 7S1P-2600 | 67.34Wh | Section II | β Most shippable |
| 7S1P-3000 | 77.7Wh | Section IB | β Standard DG |
| 7S1P-3400 | 88.06Wh | Section IB | β Standard DG |
| 7S1P-3500 | 90.65Wh | Section IB | β Below 100Wh |
βοΈ All 6 SKUs qualify for air freight β none exceed 100Wh. The 7S1P-2600 is the most logistics-friendly option at 67.34Wh Section II.
Charging Guide
| Mode | Current | Time | Notes |
|---|---|---|---|
| 0.5C Standard | 1.3A | β 2h | β Best cycle life |
| 1C Normal | 2.6A | β 65min | β Daily use |
| 2C Fast | 5.2A | β 32min | β οΈ Occasional only |
| Storage mode | 1.3A β 26.6V | β | β >3 days storage |
β οΈ Must use 29.4V / 7S balance charger with JST-XH 8Pin balance connector.
Default Package Configuration
| Item | Specification |
|---|---|
| Pack | 18650 7S1P 25.9V 2600mAh |
| Cells | 7Γ Grade A 18650 2600mAh |
| BMS | β 7-cell balancing + full protection |
| Enclosure | Blue PVC heat-shrink |
| Discharge connector | XT60 (customizable) |
| Balance connector | JST-XH 8Pin (7S) |
| Wire gauge | AWG16 |
| Wire length | 150mm |
| Label | Standard / OEM white-label |
| Stock | β In stock |
OEM / Custom Options
| Option | Details |
|---|---|
| Capacity | 2200 / 2600 / 3000 / 3400 / 3500mAh |
| Config upgrade | 7S2P / 7S3P for higher capacity |
| Enclosure color | Blue / Black / Red / Yellow / custom |
| Connector | XT60 / XT30 / Anderson / Deans / bare wire |
| Balance lead | JST-XH 8Pin (7S) standard |
| Wire gauge | AWG14 ~ AWG18 |
| Smart BMS | UART / fuel gauge IC on request |
| Housing | PVC wrap / ABS hard case / custom |
| Certification | CE, UN38.3, RoHS, UL1642, IEC62133 |
| Branding | OEM / custom color label |
| MOQ | 10 pcs |
Certification & Compliance
| Certificate | Scope | Status |
|---|---|---|
| β CE | EU market | Standard |
| β UN38.3 | Global freight | Standard |
| β RoHS | Substance compliance | Standard |
| β MSDS | Safety data sheet | Standard |
| π IEC 62133 | Battery safety | On request |
| π UL 1642 | US market | On request |
Why Choose Us?
- π Factory Direct β own cylindrical pack assembly, zero intermediaries
- π΅ Blue PVC series β consistent industrial product line identity (6S/7S/8S)
- βοΈ All SKUs air-freight eligible β max 90.65Wh, all below 100Wh
- βοΈ 7-cell BMS balancing β every pack balanced to <5mV delta
- π Grade A cells only β 100% capacity verified before assembly
- π CE + UN38.3 standard β full DG documentation included
- π¬ 7-day OEM sample β color, connector & capacity ready fast
- π οΈ Full OEM service β spec to certified mass production
π© Need 25.9V custom pack? Share motor KV, controller voltage rating & runtime target β we’ll engineer the optimal 7S configuration within 24 hours.
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